Main Features:<br />C3 Bluetooth motorcycle intercom<br />Bluetooth version: V3.0<br />Maximum talking range 1000 meters between 3 riders<br />Wireless communication between three riders by Bluetooth system<br />Excellent performance at speed up to the legal limit with a full face helmet <br />Up to 120km working speed<br />Up to 9 hours talking time<br />Stand-by time: 10 days<br />Charging time: 2.5 hours<br />Battery: lithium polymer battery 500mAh<br />operating temperature: -10 to 55C ( 14 - 131F )<br />Built-in FM radio<br />Noise cancellation<br />Wind noise reduction<br />wide volume control<br />Safe auto-receiving cell phone calls<br />Stereo music / audio function ( transmits from A2DP enabled cellphone / MP3 / GPS )<br />Water-resistant， fully weather-protected， friendly for gloves<br />Modern black， decent design<br />Ideal for motorcycle and skiing helmet<br /><br /><br />    Specifications<br />General<br />	 Accessories Type: Helmet tntercom                                                  <br />                        Function: Intercom                                                  <br />                        Material: ABS                                                  <br />                        Avaliable Color : Black                                                	<br />Dimension and Weight<br />	 Product weight: 0.054 kg                                                  <br />                        Package weight: 0.558 kg                                                  <br />                        Product size (L x W x H) : 9 x 3.5 x 2 cm / 3.54 x 1.38 x 0.79 inches                                                  <br />                        Package size (L x W x H): 22 x 17 x 6 cm / 8.65 x 6.68 x 2.36 inches                                                	<br />Package Contents<br />	 Package Contents : 2 x Intercom， 2 x Helmet Headset ( 80cm )， 2 x USB Cable ( 75cm )， 2 x Host Buckle， 2 x Screw Pack， 1 x English User Manual                                                	<br /><br /><br /><br />                                                <br />